JPH0453683Y2 - - Google Patents

Description

[Detailed description of the invention] A. Field of industrial application The present invention relates to an insole for shoes, and its purpose is to achieve air circulation inside the shoe by utilizing walking motion with a simple and rational structure. Regarding shoe insoles.

(b) Conventional technology If shoes are left covered for a long time, sweat, dust, and body heat are added to the shoes, even if the feet are not oily, producing a foul odor typical of foot swelling, which can make others feel disgusted and cause symptoms of athlete's foot. If so, the affected area may worsen and you may complain of itching. Therefore, for the purpose of air circulation inside footwear, as disclosed in Japanese Utility Model Application Publication No. 50-46342, air outlet holes are provided at the tip of the hollow bag-shaped sole pad, elastic struts are installed at the heel, and additionally, the arch of the foot is There is a shoe with an air intake hole and a valve piece on the back side of the shoe, and Japanese Patent Application Laid-Open No. 53-27845 has a pump installed on the heel of the shoe to draw outside air into the shoe. Utility Model Publication No. 63-85106 discloses that by contracting elastic rubber provided in the heel, air is taken in through an intake port provided in the arch of the foot, and air is exhausted from an exhaust port in the toe. Insoles for shoes are known.

C. Problems to be solved by the invention In the first insole of the above-mentioned conventional shoes, the air ejection holes provided at the tip of the insole are irregularly formed in large numbers, and there is no consideration given to the position of the holes.
When inhaling air, the toe part cannot completely block the air outlet, and the inhalation action and associated air circulation cannot be performed sufficiently. The same thing can be said about the third item. Furthermore, in all three of the above, the air compression section, air suction section, and air jetting section are each constructed separately and housed in a single insole, making the construction complex and the manufacturing process complicated. In particular, since the air compression part is placed in the heel area, the thickness increases accordingly, resulting in a constant feeling of discomfort and poor comfort when walking. Furthermore, in all three cases, air circulation only occurs when the heel is straddled, so when going up or down stairs, the heel remains in the air and there is hardly any ventilation.

D. Means for Solving the Problems Therefore, the present invention provides an insole that is comfortable to use, has a simple and rational structure, and effectively ventilates the inside of the shoe, and is made of non-breathable material. It is formed into a thin bag shape that matches the shape of the inner sole of the shoe, and an air outlet is provided at the tip of the thin bag shape in the part that comes into contact with the base of the finger, and behind the center,
A bowl-shaped bulge is formed by bulging a part of the upper material outward, and an air hole is provided in the center of a depression provided at the center of the bulge. for,
The proximal end thereof is attached to the inner wall of the bulging part, the other end is a free end, and an arm body is provided in the middle part with a valve body that operates toward and away from the air hole. That is.

F. Effect: If the shoes are worn in close contact with the inner sole of the shoe, during walking movement, the heel will first press against the bulge, and when the heel lifts and the contact area with the sole of the foot moves forward, the bulge will rise. Air is taken in through the air holes due to the elasticity of the parts. At this time, the air outlet is completely sealed at the base of the finger, so it is filled with sufficient air. After that, when weight is applied to the heel again, the air moves from the back to the front and is squeezed out from the air outlet to ventilate the inside of the shoe.

G. Example The shoe insole according to the present invention will be explained based on the drawings.

In Fig. 1, 1 is a pair of upper and lower non-breathable synthetic resin sheets shaped like the inner sole of a shoe.
The main body of the insole is made by pasting together the periphery to form a thin bag-like shape, and the area between the base of the thumb and the arch of the foot is almost entirely pasted together, and the surface has fine anti-slip protrusions 2, 2... ...is provided. The hollow portion thus formed in the center of the main body 1 extends from a portion corresponding to the base of the finger (hereinafter referred to as the base of the finger) 3 to the projections 2, 2...
A continuous air chamber 4 is formed that extends to the entire rear area, avoiding the bonded portion in which the seal is formed, and passing along the side of the bonded portion. The upper sheet at the base of the finger 3 of the air chamber 4 has small through-holes 5, 5 that serve as air blow-off ports.
are bored in two places, and an air hole 6, which serves as an air inlet, is formed at the rear of the part corresponding to the arch of the upper sheet. As shown in the third figure, the air hole 6 has a bowl-shaped bulge 7 around the air hole 6, and the center of the bulge 7 is depressed, and the air hole is located in the center of the depressed part. 6 is open.
A valve body 9 is provided below the air hole 6 via a band-shaped arm body 8 whose base end is pivoted to the inner wall inside the bulging portion 7, and from the valve body 9, A support branch 10 extends on the extension of the arm body 8. As a result, the valve body 9 is brought into pressure contact with the air hole 6 while the arm body 8 and the support branch 10 are supported by the inner wall of the bulging part 7 due to the internal pressure of the heel part (FIG. 4a), and the negative pressure This has the function of a check valve that separates from the air hole 6 (FIG. 4b).

When the insole formed in this way is set so as to be in close contact with the inner sole of the shoe 11 and the person walks while covering the shoe 11, the entire air chamber 4 of the insole is initially crushed as shown in Fig. 5a. Then, when the heel 12a of the foot 12 lifts, the elasticity of the main body 1 creates negative pressure inside the body 1, causing the valve body 9 to separate from the air hole 6 and air to be introduced through the gap (Fig. 5b). ). At this time, the part slightly forward of the center of the air chamber 4 is crushed by the base of the finger, and the small through holes 5 are closed, so the air chamber 4 is in a sealed state except for the air hole 6. Backflow from the small through holes 5, 5 does not occur.
Therefore, when the weight is completely transferred to the toe portion 12b and the foot 12 is raised there, the air chamber 4 is filled with air. Subsequently, when the foot 12 touches the ground, the weight is first applied to the heel portion 12a, and from there the pressing portion gradually expands to the front toe portion 12b. As a result, the air in the air chamber 4 is squeezed out from the rear to the front and moves through the small through holes 5 and 5.
It blows out and ventilates the inside of the shoe (Figure 5c).
These air flows are always circulated in only one direction due to the check valve structure of the air hole 6 and the part slightly forward of the center of the air chamber 4 being crushed and the small through holes 5, 5 being sealed. As a result, there is no backflow from the small through holes 5, 5, and the above operation is repeated during normal walking, making it comfortable even in summer.

If we consider the case where we go up and down the stairs,
Only the toe part 12b touches the ground, and the heel part hardly touches the ground (the situation shown in Fig. 5 d continues). Not only can smooth ventilation not be expected, but the internal pressure applied from the toe part increases, making it feel like stepping on a balloon. There are concerns that it will swell and become uncomfortable to wear.

However, in the insole of this embodiment, the air hole 6 is formed in the center of the central depressed part of the bulge 7 by bulging a part of the wall outward in a bowl shape. When the pressure inside 4 increases, the bulging part 7 expands further and the air hole 6 moves outward, but the valve body 9 is supported by the arm body 8 and the support branch 10 and does not follow this, and the air A gap is created between the hole 6 and the valve body 9 (FIG. 4c), through which air leaks and ventilation is performed. Further, due to the above-mentioned action, the internal pressure of the air chamber is adjusted to be below a certain value, so that it is impossible for the inside of the air chamber 4 to become overpressured or to impair the comfort of wearing the shoe.

Also, since a non-slip protrusion is provided between the base of the big toe and the arch of the foot, the foot and insole fit well even when the insole is inflated.

In this embodiment, an air chamber is not formed in the portion corresponding to the base of the thumb, but an air chamber may be formed in the entire portion. Further, the number and shape of the small through holes may be changed as appropriate as long as they can be closed at the base of the finger. Furthermore, the structure of the check valve provided in the air hole is not limited to the above embodiment.

G. Effects of the invention According to the invention, the configuration of the air hole with the bulging part and the valve body allows the air hole to perform both air compression and suction operations, thereby reducing unnecessary thickness. To provide an insole for shoes which has a simple and rational structure without causing problems or complicated structure, and which allows efficient air circulation at all times. Therefore, it does not require any effort or cost to manufacture, and there is no problem with the comfort of wearing it. Furthermore, the structure allows for ventilation even when going up and down stairs, which requires little use of the heel, so you can enjoy comfortable wearing comfort all day long.
The benefits are enormous.

[Brief explanation of the drawing]

The drawings show a shoe insole according to the present invention, and FIG. 1 is a plan view of the insole, FIG. 2 is a sectional view taken along line A-A, FIG. Figures a to c are explanatory diagrams of the same operation, and Figures a to d are explanatory diagrams of the in-shoe ventilation operation due to walking motion. 1...Main body, 2...Protrusion, 3...Finger base, 4...Air chamber, 5...Small through hole, 6...Air hole, 7...Bulge, 8...Arm body, 9... Valve body, 1
0...support branch, 11...shoes, 12...foot, 12a
...heel part, 12b...toe part.

Claims (1)

[Scope of utility model registration request] It is formed of a non-breathable material into a thin bag shape that matches the shape of the inner sole of the shoe, and an air outlet is provided at the tip of the thin bag shape in the part that touches the base of the finger, and behind the center, A bowl-shaped bulge is formed by bulging a part of the upper material outward, and an air hole is provided in the center of a depression provided at the center of the bulge.
Furthermore, inside the bulge, a valve body is provided, the proximal end of which is attached to the inner wall of the bulge, a valve body that moves toward and away from the air hole is provided in the middle part, and the other end is a free end. An insole for shoes characterized by having an arm body.